Here I am offering a Starter Plant of Thunbergia battiscombei, also known as Blue Boy, Blue Glory, and Clock Vine. This tender perennial attracts many different bees, butterflies, and birds. Thunbergia battiscombei is a tropical which prefers full sun or partial shade. These beautiful plants grow to about 3 feet high and bloom from June to September in a fury of royal blue flowers with yellow throat. USDA Hardiness Zones 9b to 11.